Portable radio



FIG. 1 is a front and top perspective view of a portable radio showing my new design;

FIG. 2 is a right side elevational view thereof, the left side elevational view being a mirror image;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a portable radio, as shown and described. 